Reports & Papers

The U.S. Clean Air Act, passed in 1970 with strong bipartisan support, was the first environmental law to give the Federal government a serious regulatory role, established the architecture of the U.S. air pollution control system, and became a model for subsequent environmental laws in the United States and globally. We outline the Act’s key provisions, as well as the main changes Congress has made to it over time. We assess the evolution of air pollution control policy under the Clean Air Act, with particular attention to the types of policy instruments used. We provide a generic assessment of the major types of policy instruments, and we trace and assess the historical evolution of EPA’s policy instrument use, with particular focus on the increased use of market-based policy instruments, beginning in the 1970s and culminating in the 1990s.

This paper addresses key design issues that were identified by the California state legislature and Air Resources Board in the new compliance period (2021 – 2030) of California’s cap-and-trade system.

Since the Paris Agreement's adoption in 2015, a majority of the world's largest investors have begun to take action on climate change. According to a new report, the 2016–2017 year showed an average improvement in decarbonization within all major investor categories except pension funds.

Author Cass Sunstein discusses U.S. climate change policy during the Obama administration, exploring the challenges and methods used to make changes in policy — often relying heavily on preexisting regulatory authorities.

For a century, the geopolitics of energy has been synonymous with the
geopolitics of oil and gas. However, geopolitics and the global energy economy
are both changing. The international order predominant since the
end of World War II faces mounting challenges. At the same time, renewable
energy is growing rapidly. Nevertheless, the geopolitics of renewable
energy has received relatively little attention, especially when considering
the far-reaching consequences of a global shift to renewable energy.

The paper starts with a discussion of seven renewable energy scenarios
for the coming decades: the IEA’s World Energy Outlook 2016, the EIA’s
International Energy Outlook 2016, IRENA’s REmap 2016, Bloomberg’s
New Energy Outlook 2016, BP’s Energy Outlook 2016, Exxon-Mobil’s Outlook
for Energy 2016 and the joint IEA and IRENA G20 de-carbonization
scenario.